12x+1=9x+13

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Solution for 12x+1=9x+13 equation: 



12x+1=9x+13

We move all terms to the left:

12x+1-(9x+13)=0

We get rid of parentheses

12x-9x-13+1=0

We add all the numbers together, and all the variables

3x-12=0

We move all terms containing x to the left, all other terms to the right

3x=12

x=12/3

x=4

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